The overall number of records is misleadingly high, as over half relate to a series collected in Speyside in 1945-46. Moreover, the majority of records relate to Caledonian pinewood sites; there are four remaining English records that all require verification against the risk of confusion with other Gilpinia species. Even taking all records at face value, there does seem to have been a major decline in records in recent decades, with no confirmed records since 1998. This suggests a decline of over 90% in the last ten years, the reasons for which are not understood, leading to an assessment of Critically Endangered under Criterion A. Assessment under Criterion B alone would suggest Endangered (with two locations in last 30 years). Having said this, there has not been detailed survey effort devoted to looking for the species, and arguably a status of Data Deficient might be more appropriate.

Only eight records overall, mostly in the south but one from Durham. The only post-1950 record is one from Newbridge-on-Wye in 1995. Assessment against all criteria supports classification as Critically Endangered under Criterion A on the basis of a recent decline (the reasons for which are not understood) from one to zero records. Similarly, the very low values for EOO (1 km2) and AOO (4 km2) in the last 30 years, coupled with a single known location and a continuing decline (to zero) also warrants a Critically Endangered status under Criterion B.

Records of this species are widely scattered in southern Britain north to Yorkshire (an outlier near Aviemore in 1944 needs verification). Almost all records pre-date 1950, with the only ones since then from Yorkshire in 1985 and 1994, and Norfolk in 1989. Whilst probably easy to overlook, the complete lack of any for nearly 30 years is notable. The data supports an assessment as Critically Endangered on the basis of the recent decline in EOO and AOO (to apparent zero), the causes of which are not understood, and the small recent range (EOO (1 km2) and AOO (4km2)) and single recent location coupled with continuing decline (to apparent zero).

This species has been recorded extremely rarely over the years, mostly from Yorkshire southwards although Benson (1952) noted an occurrence north to Roxburghshire. Since 1990 it has only been recorded twice, from Surrey in 1993 and Worcestershire in 2006. The data support a status of Critically Endangered, based on an estimated loss of 100% of AOO between 2011 and 2021, the causes for which are not understood.

A rare species, reported from only four locations to date. Benson (1952) noted reports from Sussex (1893) and Oxfordshire (1944), and subsequently recorded from Yorkshire (1983) and Leicestershire (2011). The data support a status of Critically Endangered under criteria B1 (small EOO) and B2 (small AOO), in the light of a single location and continuing decline between 2002-2011 and 2012-2021.

Apparently restricted to saltmarsh habitat, with a number of inland records considered unsafe as a result. Coastal records are known from about 10 locations north to Spurn on the east coast, and to the Solway on the west coast. A notable lack of records still from the Wash and north Norfolk. There appear to be no records since one at Kenfig Burrows in 1993. The data therefore support a status of Critically Endangered under criterion A2c, the AOO estimated to have declined by 100% in the period 2011 to 2021, the causes of which are unknown. Assessment under Criterion B also leads to a Critically Endangered status (low recent EOO and AOO, one location and continuing decline in AOO). Whilst it is possible this species is going overlooked, the upper margins of saltmarshes are a habitat at risk from sea-level rise, and so this should rightly be considered a priority species.

Very seldom recorded, with just five records from Scotland and northern England. The only recent record was from the North York Moors in 2009. Therefore, the data support a status of Critically Endangered under criteria B1 (EOO less than 100 km2) and B2 (AOO less than 10 km2), in the light of a single location and a continuing decline in AOO between 2002-2011 and 2012-2021.

Benson (1952) was only aware of records from Speyside, although older specimens from Glamorgan have been found. Further records from the 1970s were made in Lancashire and Yorkshire, and most recently, it was recorded from two sites in Northumberland in 1992, falling just within the 30-year assessment period. The data support a status of Critically Endangered under criterion A2 given an estimated decline of 100% in AOO between 2011 and 2021, the causes of which are unknown. However, this is an early-flying species and it may not have been sought by entomologists early enough in the year; the more intensive efforts in northern Britain in recent years have not been in early spring, so a presumption of Presumed Extinct may well be premature.

Assessment of the dataset against Criterion A gives an estimated decline in EOO of 96% over the last ten years, leading to a status of CR. Whilst this may to some extent be a little artefactual, based on the clumping of four records in 2008-2022 vs a wider spread in 1993-2007, the recent death of records in southern England is very noticeable, including in areas like Bedfordshire from where the species was frequently recorded in the past. In addition, the estimated 31% decline in AOO would itself lead to a VU status, as would assessment against Criterion B2. Otherwise, the number of locations exceeds five, exceeding the Criterion D2 threshold; there is no information on population size to assess against Criteria C and D1; and no life history models to inform assessments against Criterion E.

Historically this has never been a frequently recorded species. In the last 30 years there have been five records, but three of these were from one study. The complete absence since 2003 is striking for a species recorded across southern England, and the formal assessment of the records leads to a status of CR on the basis of an estimated decline of 100% of AOO in the last 10 years. In addition, the species would qualify as Endangered under Criterion B (small EOO, AOO, few locations and continuing decline). There is no information on population size to assess against Criteria C and D1 and no life history models to inform assessments against Criterion E. The species would qualify as VU under D2 but there is no clear threat linking all sites.